I am building my whole intercooler kit. my questions for you guys are which is better plastic, aluminum, steel, ss, ect. I know the weight is some and heat resistant but I didn't know if they were other reasons. Also where have you got good quality pipes from, or maybe you guys know of a kit that closely fits a fox body already? All I need is the cold side piping. I was planning on using all aluminum but I thought I would post up first, Any info is greatly appreciated.